61628234136 has 160 divisors (see below), whose sum is σ = 181535050800. Its totient is φ = 17432083200.

The previous prime is 61628234117. The next prime is 61628234179. The reversal of 61628234136 is 63143282616.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5814730 + ... + 5825318.

Almost surely, 2^61628234136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61628234136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90767525400).

61628234136 is an abundant number, since it is smaller than the sum of its proper divisors (119906816664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61628234136 is a wasteful number, since it uses less digits than its factorization.

61628234136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10727 (or 10702 counting only the distinct ones).

The product of its digits is 248832, while the sum is 42.

The spelling of 61628234136 in words is "sixty-one billion, six hundred twenty-eight million, two hundred thirty-four thousand, one hundred thirty-six".